4 Product Description
SMA Solar Technology America LLC
Installation Manual STP50-US-40-IA-en_es-11 15
Symbol Explanation
Risk of burns due to hot surfaces
The product can get hot during operation. Avoid contact during opera-
tion. Prior to performing any work on the product, allow the product to
cool down sufficiently.
Danger to life due to electric shock
The product operates at high voltages. Prior to performing any work on
the product, disconnect the product from voltage sources. All work on the
product must be carried out by qualified persons only.
Observe the documentation
Observe all documentation supplied with the product.
Warning label with compliance information
UL1741 is the standard applied by Underwriters Laboratories to the
product to certify that the product meets the requirements of the National
Electrical Code
®
, the IEEE929‑2000 standard and the IEEE1547 stan-
dard.
4.2 Interfaces and Functions
The inverter can be equipped or retrofitted with the following interfaces and functions:
User interface for the monitoring and configuration of the inverter
The inverter is standard-equipped with an integrated web server, which provides a user interface for
configuring and monitoring the inverter. The inverter user interface can be called up via the web
browser if there is an existing WLAN or Ethernet connection to a computer, tablet PC or
smartphone.
SMASpeedwire
The inverter is equipped with SMASpeedwire as standard. SMASpeedwire is a type of
communication based on the Ethernet standard. This enables inverter-optimized 10 or 100Mbit
data transmission between Speedwire devices in PV systems and the user interface of the inverter.
SMA Webconnect
The inverter is equipped with a Webconnect function as standard. The Webconnect function
enables direct data transmission between the inverters of a small-scale system and the Internet
portals SunnyPortal or SunnyPlaces without any additional communication device and for a
maximum of 4 inverters per SunnyPortal system. In large-scale PV power plants with more than 4
inverters, there is the option of establishing data transmission between the inverters and the
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